Pressing and buckling structure of pulling rope, control structure and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a pressing and buckling structure of a pulling rope used for adjusting the angle of a lens, a control structure and an endoscope, the pressing and buckling structure comprises a winding column, and one end of the winding column protrudes in the radial direction to form a top cap part; the other end of the winding column protrudes in the radial direction to form a bottom protruding part and is provided with a pressing buckle through groove with an opening back on to the top cap part, the winding column is further provided with a radial penetrating hole, and the penetrating hole is formed between the bottom of the pressing buckle through groove and the top cap part. Due to the arrangement of the penetrating hole, the traction rope cannot be separated from the winding column, and due to the fact that the traction rope is wound below the bottom of the pressing buckle through groove, tensioning force cannot be generated on the bottom protruding parts on the two sides of the pressing buckle through groove, and therefore the winding column is prevented from being separated from the rotating wheel structure.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a buckle structure, a control structure and an endoscope for a traction rope for adjusting the lens angle. Background Art

[0002] In the use of an endoscope, it is necessary to adjust the angle of the lens to observe different angles in the inner cavity. In the prior art, the adjustment of the lens angle is carried out by a traction rope, and the traction rope is connected to a runner. By rotating the runner, the traction rope is pulled, and thus the angle change of the lens is realized. For example, the "A Traction Rope Fixing Structure, Its Assembly Structure and an Endoscope" disclosed in the Chinese patent document, with the publication number CN 214201919U, specifically relates to a traction rope fixing structure, its assembly structure and an endoscope. The fixing mechanism, that is, the buckle structure, includes a base and a fixing column. The base is fixedly connected to the fixing column. A radial groove radially penetrating the fixing column is axially formed along the fixing column, and a circumferential groove is formed in the circumferential direction of the fixing column. When fixing the traction rope, by winding the traction rope on the circumferential groove and passing through the radial groove, the traction rope can be fixed, and then the fixing mechanism is fixed on the runner. Its disadvantages are that since the radial groove is through, the traction rope is prone to slide up and down along the fixing column, resulting in an error in the angle rotation; in addition, the tightened traction rope is prone to pull the two sides of the radial groove towards the middle after long-term use, thereby causing the fixing structure to come off the runner or the traction rope to slip off the fixing column. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem that the existing buckle structure is prone to come off or cause the traction rope to come off, and to provide a buckle structure, a control structure and an endoscope for a traction rope.

[0004] The technical solutions provided by the utility model are as follows:

[0005] A buckle structure for a traction rope includes a winding column. One end of the winding column protrudes radially to form a top cap portion, and the other end protrudes radially to form a bottom convex portion and is provided with a buckle through groove with an opening facing away from the top cap portion. A radial through hole is further provided on the winding column, and the through hole is arranged between the bottom of the buckle through groove and the top cap portion.

[0006] When fixing the traction rope, wind the traction rope around the middle of the winding post and then pass it through the perforation, or pass it through the perforation and then wind it around the middle of the winding post, or wind the traction rope around the middle of the winding post and then pass it through the perforation multiple times. In this way, the traction rope can be wound and fixed. The above winding and fixing method is simple to operate. And due to the setting of the perforation, the traction rope cannot escape from the winding post or move around during use. Also, since the traction rope is wound below the bottom of the buckle through groove, it will not generate a tension force on the bottom convex parts on both sides of the buckle through groove, thus preventing the winding post from escaping from the rotating wheel structure.

[0007] Preferably, a chamfered surface is provided at the end edge of the bottom convex part to facilitate the winding post to be inserted into the rotating wheel structure.

[0008] A control structure for a traction rope includes a rotating wheel structure and a control lever for rotating the rotating wheel structure. An annular groove is circumferentially provided on the side surface of the rotating wheel structure. It also includes the above-mentioned buckle structure for the traction rope. An installation hole for fixing the buckle structure is provided on the rotating wheel structure, and a guiding channel leading to the annular groove is provided in the installation hole.

[0009] After the traction rope is wound and fixed on the winding post, align the bottom convex part of the fixed buckle structure with the installation hole and insert it. Install the fixed buckle structure onto the rotating wheel structure. Adjust the traction rope to pass through the guiding channel and thus wind it in the annular groove to complete the fixation of the traction rope to the rotating wheel structure. Compared with the traditional rotating wheel structure, only one fixed buckle structure can be used to fix the traction rope and prevent the traction rope from falling off. Due to the setting of the perforation, the traction rope cannot escape from the winding post or move around during use, making the fixation of the traction rope more secure.

[0010] Preferably, the rotating wheel structure is provided with a rotating shaft. A counterbore for sleeving the end of the rotating shaft is provided at the end of the control lever. The bottom of the counterbore is circumferentially fixed to the rotating shaft, and an installation buckle is installed at the top. The installation buckle extends a buckle towards the end of the rotating shaft. A buckle through groove with a notch facing the rotating shaft and a protrusion protruding radially along the rotating shaft are provided at the end of the buckle. The rotating shaft is provided with a card slot for accommodating the buckle and a pit for accommodating the protrusion.

[0011] During installation, sleeve the end of the control lever onto the bottom of the counterbore and circumferentially fix it to the rotating shaft. Then install the installation buckle from the top of the counterbore so that the buckle is pressed into the buckle through groove and the pit of the protrusion fits, thus restricting the end of the control lever from escaping from the end of the rotating shaft. The control lever is connected to the rotating shaft through the counterbore, and the bottom of the counterbore is circumferentially fixed to the rotating shaft, so that the rotation of the control lever drives the rotating wheel structure to move synchronously.

[0012] Preferably, counterbores are provided at both ends of the joystick and are respectively sleeved on both ends of the rotating shaft. This makes the installation more firm, the operation more stable, and the elasticity of the joystick itself prevents the end of the joystick from sliding towards the middle of the rotating shaft.

[0013] An endoscope includes a housing, and also includes the above-mentioned buckle structure of the traction rope and / or the above-mentioned control structure of the traction rope.

[0014] An endoscope includes a housing, and also includes the above-mentioned control structure of the traction rope. The rotating wheel structure is provided with a rotating shaft. The joystick semi-surrounds the outside of the housing. The housing is provided with a housing counterbore for sleeving the end of the joystick, and the housing is provided with a rotating shaft column for accommodating the rotating shaft.

[0015] The end of the joystick is installed in the housing counterbore of the housing, so that the end of the joystick cannot slide towards the middle of the rotating shaft. The rotating shaft column is used to limit and protect the rotating shaft.

[0016] Preferably, radial convex ribs are provided on the surface of the end that cooperates with the housing counterbore, and several rib grooves corresponding to the convex ribs are provided in the housing counterbore. When the joystick is rotated, the convex ribs slide through the multiple rib grooves to achieve the sound and feel feedback during adjustment. The convex ribs can be provided in the housing counterbore, the rib grooves can be provided at the end, and the number of convex ribs and rib grooves can also be swapped, all of which can play the same role.

[0017] Preferably, a limiting strip is provided on the rotating wheel structure, and a retaining rib for blocking the limiting strip is provided in the handle housing. This limits the rotation range of the rotating wheel structure and prevents damage caused by excessive rotation angle.

[0018] Preferably, the rotating wheel structure is further provided with a notch, and a positioning post that can be inserted into the notch is provided in the handle housing. This facilitates the positioning of the rotating wheel structure during installation, and the positioning post can be removed after installation.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] When fixing the traction rope, the traction rope is wound around the middle of the winding column and then passes through the perforation. Repeating this once or multiple times can wind and fix the traction rope. The fixing method is simple to operate and can prevent the traction rope from moving during use.

[0021] Due to the setting of the perforation, the traction rope cannot be disengaged from the winding column, and since the traction rope is wound below the bottom of the buckle through groove, it will not generate a tension force on the bottom convex parts on both sides of the buckle through groove, thereby preventing the winding column from being disengaged from the rotating wheel structure. Description of the Drawings

[0022] Figure 1Schematic three-dimensional view of the first embodiment of the present utility model;

[0023] Figure 2 Schematic diagrams of three winding methods of the traction rope in the first embodiment of the present utility model;

[0024] Figure 3 Schematic three-dimensional view of the second embodiment of the present utility model;

[0025] Figure 4 Schematic three-dimensional view of the fourth embodiment of the present utility model;

[0026] Figure 5 Schematic three-dimensional view of the fourth embodiment of the present utility model after removing part of the outer shell 5;

[0027] Figure 6 is Figure 5 Schematic cross-sectional view in the A-A direction in;

[0028] Figure 7 Schematic exploded three-dimensional view of the fourth embodiment of the present utility model after removing part of the outer shell 5.

[0029] Explanation of reference numerals: winding column 1, top cap portion 11, bottom convex portion 12, chamfered surface 121, snap-through groove 13, through hole 14, runner structure 2, annular groove 21, guiding channel 22, rotating shaft 23, card slot 231, pit 232, limiting strip 24, notch 25, mounting hole 26, operating rod 3, counterbore 31, end portion 32, mounting buckle 4, snap 41, snap-through groove 411, protrusion 412, outer shell 5, outer shell counterbore 51, rotating shaft column 52, retaining rib 53, positioning column 54, convex rib 6, rib groove 7, traction rope 8. Detailed implementation manners

[0030] The following further describes the detailed implementation manners of the present utility model with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0031] Embodiment 1, as Figure 1 shown, a snap structure of a traction rope includes a winding column 1. One end of the winding column 1 protrudes radially to form a top cap portion 11, and the other end protrudes radially to form a bottom convex portion 12 and is provided with a snap-through groove 13 with an opening facing away from the top cap portion 11. A radial through hole 14 is further provided on the winding column 1, and the through hole 14 is arranged between the bottom of the snap-through groove 13 and the top cap portion 11. A chamfered surface 121 is provided at the end edge of the bottom convex portion 12 to facilitate the winding column 1 to be snapped into the runner structure.

[0032] When fixing the traction rope, the traction rope is wound around the middle of the winding post 1 and then passes through the through-hole 14, or passes through the through-hole and then is wound around the middle of the winding post 1, or the traction rope is wound around the middle of the winding post 1 and then passes through the through-hole 14 multiple times. Figure 2 Three winding methods are shown in Figure 2 . The winding method can be set according to needs. In this way, the traction rope can be wound and fixed. The above-mentioned winding and fixing method is simple to operate. And due to the setting of the through-hole 14, the traction rope cannot be disengaged from the winding post 1. And since the traction rope is wound below the bottom of the snap-through groove 13, no tensile force is generated on the bottom convex parts 12 on both sides of the snap-through groove 13, thus preventing the winding post 1 from being disengaged from the rotating wheel structure.

[0033] Embodiment 2, as Figure 3 shown, a control structure of a traction rope includes a rotating wheel structure 2 and a control lever 3 for rotating the rotating wheel structure 2. An annular groove 21 is circumferentially arranged on the side surface of the rotating wheel structure 2. It also includes the snap-fastening structure of the traction rope in Embodiment 1. An installation hole 26 for fixing the snap-fastening structure is arranged on the rotating wheel structure 2, and a guiding channel 22 leading to the annular groove 21 is arranged in the installation hole 26.

[0034] The rotating wheel structure 2 is provided with a rotating shaft 23. The end 32 of the control lever 3 is provided with a cylindrical counterbore 31 for sleeving the end of the rotating shaft 23. The outside of the end 32 is correspondingly stepped. The bottom of the counterbore 31 is circumferentially fixed to the rotating shaft 23, and an installation buckle 4 is installed on the top. The installation buckle 4 extends towards the end of the rotating shaft 23 with a buckle 41. The end of the buckle 41 is provided with a buckle through-channel 411 with a notch facing the rotating shaft 23 and a protrusion 412 protruding radially along the rotating shaft 23. The rotating shaft 23 is provided with a card slot 231 for accommodating the buckle 41 and a pit 232 for accommodating the protrusion 412.

[0035] After the traction rope is wound and fixed on the winding post 1, the bottom convex part 12 of the fixed snap-fastening structure is aligned with the installation hole 26 and inserted. The fixed snap-fastening structure is installed on the rotating wheel structure 2. The traction rope is adjusted to pass through the guiding channel 22 and thus wound in the annular groove 21, completing the fixation of the traction rope and the rotating wheel structure 2.

[0036] During installation, the end 32 of the joystick 3 is sleeved onto the bottom of the counterbore 31 and circumferentially fixed to the rotating shaft 23. For example, circumferential fixation is achieved through keyway fitting. That is, the end of the rotating shaft 23 is set to be waist-shaped cylindrical, which mates with the bottom of the counterbore 31. A platform can just protrude near the middle position of the waist-shaped cylindrical end to prevent the end 32 from sliding towards the middle of the rotating shaft 23. Then, the mounting buckle is installed from the top of the counterbore 31, so that the buckle 41 is pressed into the buckle through slot 411 and the pit 232 of the protrusion 412 mates, thereby restricting the end 32 of the joystick 3 from disengaging from the end of the rotating shaft 23. The joystick 3 is connected to the rotating shaft 23 through the counterbore 31, and the bottom of the counterbore 31 is circumferentially fixed to the rotating shaft 23, so that the rotation of the joystick drives the synchronous movement of the runner structure 2.

[0037] In addition, counterbores 31 can be provided at both ends of the joystick 3 and respectively sleeved on both ends of the rotating shaft 23, as Figure 3 shown. This makes the installation more firm, the operation more stable, and the elasticity of the joystick 3 itself is used to prevent the end 32 of the joystick 3 from sliding towards the middle of the rotating shaft 23.

[0038] Embodiment 3: An endoscope includes a housing 5 and also includes the pressing buckle structure of the traction rope in Embodiment 1.

[0039] Embodiment 4: As Figures 4 - 7 shown, an endoscope includes a housing 5 and also includes the control structure of the traction rope in Embodiment 2. The runner structure 2 is provided with a rotating shaft 23. The joystick 3 semi-surrounds the outside of the housing 5. A cylindrical housing counterbore 51 for sleeving the end 32 of the joystick 3 is provided on the housing 5, and a rotating shaft column 52 for accommodating the rotating shaft 23 is provided inside the housing 5.

[0040] The end 32 of the joystick 3 is installed in the housing counterbore 51 of the housing, so that the end 32 of the joystick 3 cannot slide towards the middle of the rotating shaft 23. The rotating shaft column 52 is used to limit and protect the rotating shaft.

[0041] Radial convex ribs 6 are provided on the surface of the end 32 that mates with the housing counterbore 51, and several rib grooves 7 corresponding to the convex ribs 6 are provided in the housing counterbore 51. When the joystick 3 is rotated, the convex ribs 6 slide through the multiple rib grooves 7 to achieve the sound and feel feedback during adjustment. The convex ribs 6 can be provided in the housing counterbore 51, the rib grooves 7 can be provided on the end 32, and the numbers of the convex ribs 6 and the rib grooves 7 can also be swapped, which can all play the same role.

[0042] The runner structure 2 is provided with a limiting strip 24, and a rib 53 for blocking the limiting strip 24 is provided inside the handle housing 5. As Figure 5As shown, the angle between the retaining ribs 53 is 90°, enabling the runner to rotate within the range of ±45°, restricting the rotation range of the runner structure and preventing damage caused by excessive rotation. The rotation range is set as required and is not limited to 90°.

[0043] The runner structure 2 is also provided with a notch 25, and a positioning post 54 that can be inserted into the notch 25 is arranged inside the handle housing 5. This facilitates the positioning of the runner structure 2 during installation, and the positioning post is removed after installation.

[0044] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

Claims

1. A buckle structure for a traction rope, characterized in that: The winding column (1) comprises a winding column (1), one end of which radially protrudes to form a top cap portion (11), and the other end of which radially protrudes to form a bottom protrusion portion (12) and is provided with a buckle groove (13) whose opening faces away from the top cap portion (11); the winding column (1) is also provided with a radial through hole (14), and the through hole (14) is arranged between the bottom of the buckle groove (13) and the top cap portion (11).

2. The buckle structure of the traction rope according to claim 1, characterized in that: A chamfered surface (121) is provided at the end edge of the bottom convex portion (12).

3. A control structure for a traction rope, comprising a rotating wheel structure (2) and a joystick (3) for rotating the rotating wheel structure (2), wherein a side surface of the rotating wheel structure (2) is provided with an annular groove (21) in a circumferential direction, and characterized in that: It also comprises the buckle structure of the traction rope according to claim 1 or 2, the rotating wheel structure (2) is provided with a mounting hole (26) for fixing the buckle structure, and the mounting hole (26) is provided with a guide channel (22) leading to the annular groove (21).

4. The control structure of the traction rope according to claim 3, characterized in that: The rotating wheel structure (2) is provided with a rotating shaft (23); the end of the operating lever (3) is provided with a countersunk hole (31) sleeved with the end of the rotating shaft (23); the bottom of the countersunk hole (31) is circumferentially fixed to the rotating shaft (23); the top of the countersunk hole (31) is provided with a mounting buckle (4); the mounting buckle (4) is provided with a buckle (41) extending toward the end of the rotating shaft (23); the end of the buckle (41) is provided with a buckle through groove (411) with a notch facing the rotating shaft (23) and a protrusion (412) protruding radially along the rotating shaft (23); the rotating shaft (23) is provided with a clamping groove (231) for accommodating the buckle (41) and a recess (232) for accommodating the protrusion (412).

5. The control structure of the traction rope according to claim 4, characterized in that: Both ends of the operating rod (3) are provided with countersunk holes (31) and are respectively sleeved on the two ends of the rotating shaft (23).

6. An endoscope, comprising a housing (5), characterized in that: It also includes the buckle structure of the traction rope according to claim 1 or 2 or the control structure of the traction rope according to claim 3, 4 or 5.

7. An endoscope, comprising a housing (5), characterized in that: It also includes the control structure of the traction rope as claimed in claim 3, 4 or 5, wherein the rotating wheel structure (2) is provided with a rotating shaft (23), the operating rod (3) is semi-surrounded by the outer shell (5), the outer shell (5) is provided with a shell countersunk hole (51) for sleeve-connecting the end (32) of the operating rod (3), and the outer shell (5) is provided with a rotating shaft column (52) for accommodating the rotating shaft (23).

8. The endoscope according to claim 7, characterized in that: A radial ridge (6) is provided on the surface of the end portion (32) that matches the shell countersunk hole (51), and the shell countersunk hole (51) is provided with a plurality of ridge grooves (7) corresponding to the ridge (6).

9. The endoscope according to claim 7 or 8, characterized in that: A limit strip (24) is provided on the rotating wheel structure (2), and a blocking rib (53) for blocking the limit strip (24) is provided in the outer shell (5).

10. The endoscope according to claim 7 or 8, characterized in that: The rotating wheel structure (2) is further provided with a notch (25), and a positioning column (54) capable of being inserted into the notch (25) is provided in the housing (5).

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